#include <stdio.h>g
int main ()
{
	int max(int x,int y);
    int a,b,c;
    scanf("%d,%d",&a,&b);
    c=max(a,b);
    printf("max=%d\n",c);
    return 0;
}
   int max(int x,int y)
{
	int z;
	if(x>y)z=x;
	else z=y;
	return(z);
} 
